Setting Up the Component Test Environment

Components are the most basic building blocks of React and Next.js applications. We use them to build reusable elements that render markup and handle logic. Setting up component testing with Cypress and Next.js involves making some configuration changes and creating new files. We have to define the base html file into which we mount our React components—a development server that serves our components and a custom mount command that renders our React components. Let’s create a new file called component-index.html with the contents shown below in the /cypress/support/ folder. Cypress will use this file to mount the React components we want to test.